The PX900 Portable DiagnostX Instrument

LocusUSA Launches the DiagnostX PX-900 Instrument for Federal and Public Safety Agencies – A New Age in Portable Radio Maintenance

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Emergency management organizations can rapidly deploy the PX-900 over-the-air (OTA) radio analyzer on-the-go. The instrument reports the operating performance of two-way radios during critical, time-sensitive missions.

LocusUSA recently launched a portable DiagnostX instrument for P25 Conventional radio systems, the PX-900. This new mobile radio waveform analyzer enables Federal Agencies, the U.S. Military, and Public Safety to identify two-way radios in need of service, touch-free, over-the-air in real-time, without user intervention.

The PX-900 Portable Instrument is a radio monitoring solution that diagnoses the alignment characteristics and operability of two-way radios on a system. It proactively detects and identifies instances of crystal oscillator damage, radio frequency (RF) drift, and related radio frequency interference before these incidents lead to hazardous conditions and communication failures.


  • Protocol: P25 Conventional and Trunk
  • Frequency Bands: VHF 136-174, UHF 380-430, UHF 450-470, UHF 470-512 and 700, 800, 900 MHz
  • Measurements: 14 inches (W) x 10 inches (H) x 4 inches (D)
  • Case: Waterproof and dustproof
  • Weight: 11 lbs. (approximately)
  • Power Requirement: 12VDC at 1.5 Amps
  • A stand-alone instrument that operates on standard AC or its own DC power (~6 hours)
  • Generates reports allowing the user to identify radios requiring service and validate the accuracy of the other radios

“With the DiagnostX PX-900 portable instrument, convenient in-field testing and monitoring can be implemented and maintained without compromise,” said Joseph Rey, managing partner of LocusUSA. “This state-of-the-art device will make a difference in mobile radio maintenance by simplifying the analysis of mission-critical communications equipment while providing time-savings for organizations and ensuring the operational readiness of field radios.”

For more information on how DiagnostX can help keep your personnel safe while ensuring operational readiness, contact us at (321) 727-3077 or to  schedule your DiagnostX demonstration.

About LocusUSA
LocusUSA is an R&D engineering and software development company located in West Melbourne on the Space Coast of Florida since 2001. It is a leader in radio frequency (RF) capture for radio analysis and location.

The ability to capture and analyze the actual waveform of a radio transmission led to the development of DiagnostX, a patented system that can measure the alignment and operating characteristics of a radio, touch-free, over-the-air (OTA) in real-time, without user intervention.

LocusUSA supports government customers across the United States and Canada on the local, state, and federal levels with this first-of-its-kind, proactive tool ensuring the optimal performance of a radio system.

For more information about the DiagnostX PX-900 portable instrument, visit, or on LinkedIn, Twitter, Facebook, and YouTube.